Here's what rhymes with ruminatingly.
illuminatingly gratingly irritatingly humiliatingly nauseatingly fascinatingly intimidatingly invigoratingly titillatingly unhesitatingly hesitatingly penetratingly infuriatingly ingratiatingly accommodatingly aggravatingly deprecatingly devastatingly exasperatingly calculatingly excruciatingly Words that almost rhyme with ruminatingly
engagingly ragingly amazingly basically unfailingly evasively animatedly scathingly imitatively rakishly creatively unavailingly piratically jadedly meditatively legislatively pervasively entertainingly abrasively persuasively exaggeratedly prosaically uncomplainingly lackadaisically qualitatively authoritatively administratively algebraically appreciatively collaboratively complicatedly exasperatedly manipulatively